What is the ruling on Umrah if the pilgrim performs Sa'y before performing Tawaf?

He does not have to repeat the Sa'y (ritual circumambulation between Safa and Marwa), because of what Abu Dawud narrated with a sound chain of transmission from Usama ibn Sharik that the Prophet, peace and blessings be upon him, said to someone who had performed some rites of Hajj out of order, bringing some forward and delaying others: "There is no harm, there is no harm, except for a man who borrowed the honor of a Muslim man unjustly, for that is the one who is in harm and perdition."